Personally, if someone claims to not only have developed a platform to run a video decoder inside the browser, but also a codec which beats H.264 hands down, all they can do to convince me is giving me stuff to play with.
So, before we have independent testing of these claims, i'll consider it hyped.
You know how such comparisons to H.264 always use the H.264 reference encoder as comparison, so theirs looks better?
Real world comparisons to real world encoders, and we'll talk!